if ABC is an equilateral triangle, then ABC is an equiangular triangle. conversely,
a. ABC is both equilateral and an equilateral triangle
b. if ABC is an equiangular triangle, then ABC is an equilateral triangle.
c. ABC is an equilateral triangle if and only if ABC is an isosceles triangle.
d. ABC is an equilateral triangle, then ABC is not isosceles triangle
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Answer:
A. because that's a right answer.